What Types of Genes Are Highly Variable? (IMAGE) University of Cambridge Caption What types of genes are highly variable? Many highly variable genes are involved in a plant's response to environment and have more variable activity in the day or at night. Credit ©Sandra Cortijo Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.